Find the area of the entire shape first, including the gap. Then, be sure to find the area of the gap. Then, subract the area of the whole rectangle to the area of the gap ( rectangle minus gap) and voila!
Area of entire object= 10 units x 7 units= 70 units.
Area of the gap= 2 units x 6 units= 12 units.
Area of the shaded figure= 70 units - 12 units= 58 units.
So, 58 units should be the correct answer.
